Brake for aircraft



Apl 'il 28, 1931. KOLLINEK 1,802,724

' BRAKE FOR AIRCRAFT Filed May 27, 1930 Patented Apr. 28, 1931 KURT KOLLIltTEK, 0F LICHTENIBERG, BERLIN, GERMANY, ASSIGNOR T0 KNORR-BREMSE ax'i'r'nnensnnnscmr, 0r BERLIN,

GERMANY, A CORPORATION OF GERMANY BRAKE non AIRCRAFT Applicationfiled May 27, 1930, Serial No. 456,248, and in Germany October 7, 1929.

This invention relates to brakes for air craft landing wheels and particularly to compressed air brakes, by means of which the run of the aircraft after landing upon the ground is shortened, and at the same time the aircraft can be steered by differential braking forces applied to the landing wheels on op osite sides of the aircraft.

uch a brake is known in which the brake lever acts upon a diiferential gear, which in its turn acts upon the adjustmentlever of the brake valyes, the turning of the brake lever in one plane causing a uniform operation of the brake valves for braking on a straight run while turning the lever in another plane causes a differential operation of the brake for braking and simultaneously steering the air-craft. In this known brake,

, in order to assist the pilot when landing, the

differential turning movement of the brake lever can be effected by means of the pedal levers of the lateral rudder as soon as the brake lever is in the operative position, and in this way a combined action of the brake lever and the pedal levers of the lateral rudder is obtained.

An object of the present invention is to provide a simplified apparatus without differ ential gearing for accomplishing either even braking for straight running or uneven brakingfor steering after landing. Other objects and advantages of the invention will be apparent from the following description read in conjunction with drawings or diagrams, which illustrate in perspective three constructional examples of the invention.

position of uniform braking.

' Figure 2 represents another modification also in the position of uniform raking.

The brakes (not shown) are of any suitable construction and are controlled by valves a, a which serve for filling and emptying the brake cylinders whenthe valve levers a, a

Figure 1 represents a modification in the the accompanying are'actuated by traction on flexible members 6, b in the form of ropes, which are connected to the ends of. the said valve levers. The

ropes are fastened to the pedal levers e, e

which actuate the laterally movable rudder h; and also are connected to the brake lever g pivotedat 9 When the brakes are not in use and the lever g is in the actuation of either of the pedal levers e, 6 effects the turning of the rudder h but has no action on either of the brake vales a, a

When the aircraft on landing reaches the ground, the brake lever g is brought into the position shown in Figure 2, and the ropes b, b are caused to exert traction on the valve levers a formly applied. I If it be desired to steer the aircraft to right or left while running on the ground, one of the pedal pressed f rward, the other pedal lever auto maticall moving to therear to the same extent. At the same timethe first pedal lever exerts traction on the rope (b or 6 connecting it with one of the brake valve levers, and increases the brake action on that side, while the rope at the other side is slackened and allows the associatedbrake valve to cut oil the feed of air to the corresponding brake cylinder or even to exhaust it. Thus the aircraft is braked on one side and consequently makes a turning movement.

In Figure 1 the ropes b, 6 each constitute a single loop or bight passing around a guide pulley (a o a") carried on-the end of the valve lever, the ends of the rope being respectively' secured to the brake lever g and to the corresponding pedal lever.

position seen in Figure 1,

levers e or e is- Other variations in the arrangement'of the constructional parts employed could be made without departing from the principle of this invention or sacrificing the advantages there-- of, and it is to be understood as including any modifications which fall of the following claim.

within the scope What I claim as my invention and desire to secure by Letters Patent of the United States is In an aircraft, a rudder, a pedal to op- 5 erate said rudder, a brake lever, a brake having a valve lever and operable by ro' traction, a pulley on said valve lever, an a rope guided around said pulley, said rope being astened at one end to said pedal and at the other end to said brake lever.

- KURT KOLLINEK.

gas 

